"How come they don't run a through bolt on the top, to easy to break an ear ?"
Exactly ! I saw a guy try that one time and he snapped off the front ear...boy was he pissed ! I suppose you could use a spacer between the 2 ears to provide support, similar to the spacer used on the alternator between the 2 ears on the top (long) bolt. :hmmm:
I've never tried it though.....the 3 attachment points are plenty strong with grade 5 bolts (or better)....never had a problem, knock on wood !
Ron